I develop one app in which i can send audio,video and image from sdcard to server but there are some problem are raise :: i use HTTP with POST(vb.net web-services). can you guide me what is the mistake ??

You need to be more specific about what your problem is. If you are getting errors, what are they? What part of the code is generating the errors?
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BryanNov 9 '11 at 10:58

there are no error are raise but problem is when i chose from sdcard any file and it goes to infinite process.
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mascotNov 9 '11 at 10:59

Do you mean your code gets stuck in an infinite loop? Have you tried running your code in a debugger to see what it is doing step by step?
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BryanNov 9 '11 at 11:01

i have check in phone not in emulator because emulator restrict to store file in sdcard {reason of write permission}
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mascotNov 9 '11 at 11:03

You should either attempt to get a debugger running, or try debugging using print/log statements. Using log statements you should be able to figure out where your code is getting stuck.
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BryanNov 9 '11 at 11:08